Microsoft Small Basic

Program Listing:
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gw = 600
gh = 600
GraphicsWindow.Width = gw
GraphicsWindow.Height = gh
GraphicsWindow.BackgroundColor = GraphicsWindow.GetColorFromRGB(200,175,175)

segments = 16
rad = gw/4
cx = gw/2
cy = gh/2

offset = 0
theta1 = 0
x1 = cx+rad*Math.Cos(theta1)
y1 = cy+rad*Math.Sin(theta1)
While ("True")
  offset = offset+1
  For i = 1 To segments
    theta2 = theta1+2*Math.Pi/segments
    x2 = cx+rad*Math.Cos(theta2)
    y2 = cy+rad*Math.Sin(theta2)
    j = Math.Remainder(i+offset,segments)
    R = 50+Math.Abs((j/(segments-1)-0.5)*300)
    G = R/2
    B = R/2
    GraphicsWindow.BrushColor = GraphicsWindow.GetColorFromRGB(R,G,B)
    GraphicsWindow.FillTriangle(cx,cy,x1,y1,x2,y2)
    GraphicsWindow.PenColor = GraphicsWindow.GetColorFromRGB(100,75,75)
    GraphicsWindow.DrawLine(cx,cy,x1,y1)
    GraphicsWindow.DrawLine(cx,cy,x2,y2)
    theta1 = theta2
    x1 = x2
    y1 = y2
  EndFor
  Program.Delay(30)
EndWhile
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